DEHNbloc® Maxi 1 CI 440 / 760 FM

Coordinated Type 1 Lightning Current Arrester with integrated Backup Fuse

For protecting low-voltage consumer's installations against surges and even direct lightning strikes.For installation in conformity with the lightning protection zone concept at the boundaries from 0A– 1.
  • Spark-gap-based lightning current arrester with integrated lightning current carrying backup fuse in a compact enclosure
  • Extremely high lightning current discharge capacity of 35 kA (10/350 µs)
  • Low voltage protection level (including backup fuse)
  • High follow current extinguishing capability and limitation thanks to RADAX Flow technology
  • Energy coordination with other arresters of the Red/Line product family
  • Operating state / fault indication by green / red indicator flag in the inspection window

Version

DEHNbloc Maxi 1 CI 440 FM: Coordinated single-pole lightning current arrester with integrated backup fuse, high follow current extinguishing capability and remote signalling contact for monitoring device (floating changeover contact) for UC = 440 V
DEHNbloc Maxi 1 CI 760 FM: Coordinated single-pole lightning current arrester with integrated backup fuse, high follow current extinguishing capability and remote signalling contact for monitoring device (floating changeover contact) for UC = 760 V

Details

Flexible installation using mounting brackets
The coordinated DEHNbloc Maxi CI 440 and 760 lightning current arresters are specifically designed for higher system voltages, thus efficiently protecting installations from the effects of direct lightning strikes and surges. The features of the proven DEHNbloc Maxi device series and a lightning current carrying arrester backup fuse are combined in the compact enclosure with a width of three standard modules and therefore the devices require up to 60 % less space than a conventional solution.
With system applications getting more and more compact, it is difficult to install lightning current arresters in conformity with the standard. DEHNbloc Maxi CI allows space-saving integration of a type 1 arrester and is said to meet the protection requirements of modern switchgear installations.
Typical fields of application of this arrester are industrial plants with common nominal voltages of 400 / 690 V, IT systems of the chemical industry with nominal voltages of 500 V a.c., protection of the transformer on the low-voltage side of wind turbines and protection of the a.c. side of central inverters of photovoltaic systems.
The integrated backup fuse is dimensioned to ensure maximum discharge capacity and optimal system protection. Consequently, the need to select and install an adequate arrester backup fuse is eliminated, ensuring short connecting cable lengths as required in the IEC 60364-5-53 standard.
The proven spark gaps with wave breaker function and RADAX Flow technology are the core of the coordinated DEHNbloc Maxi CI 440 and 760 lightning current arresters. In case of spark-gap-based type 1 arresters, the full current flows through the type 1 arrester during the discharge process; similar to a wave breaker, the destructive energy is mitigated to a sufficiently low level, thus considerably relieving the downstream SPDs and the entire electrical installation. In addition to this wave breaker function, the RADAX Flow technology reduces and extinguishes mains follow currents to such a low level that even a 32 A gG fuse does not trip. This ensures high availability and longevity of the electrical installation.
The new enclosure concept allows flexible installation. Due to the typical installation environment, DEHNbloc Maxi CI is delivered with two mounting brackets so that the arresters can also be directly fixed on a mounting plate. However, the arresters can also be mounted on a DIN rail.
The operating state / fault indication of DEHNbloc Maxi CI, which also includes the fuse monitoring, needs no power to operate and instantly shows the status of the devices. Apart from the standard visual indicator with green and red flags, the devices feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as a break or make contact according to the particular circuit concept.

Models

DEHNbloc Maxi 1 CI 440 FM

DEHNbloc Maxi 1 CI 760 FM

DEHNbloc Maxi 1 CI 440 FM

Basic circuit diagram DBM 1 CI 440 FM
Dimension drawing DBM 1 CI 440 FM

Coordinated single-pole lightning current arrester with integrated backup fuse for 400 / 690 V TN systems and 400 V IT systems; with remote signalling contact for monitoring device (floating changeover contact).

Specifications

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-11
Nominal voltage (a.c.) (UN)
Maximum continuous operating voltage (a.c.) (UC)
Lightning impulse current (10/350 µs) (Iimp)
Specific energy (W/R)
Voltage protection level (UP)
Follow current extinguishing capability (a.c.) (Ifi)
Follow current limitation / Selectivity
Response time (tA)
Max. mains-side overcurrent protection
Rated breaking capacity of the internal backup protection
Temporary overvoltage (TOV) (UT) – Characteristic
Operating temperature range (TU)
Operating state / fault indication
Number of ports
Cross-sectional area (L, N/PE(N)) (min.)
Cross-sectional area (L, N/PE(N)) (max.)
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity
Type of remote signalling contact
Switching capacity (a.c.)
Switching capacity (d.c.)
Cross-sectional area for remote signalling terminals
Supplementary data:
– Nominal discharge current (8/20 µs) (In)
Weight
GTIN
PU
Part No.
  • DBM 1 CI 440 FM
  • 961 146
  • type 1 / class I
  • 400 / 690 V (50 / 60 Hz)
  • 440 V (50 / 60 Hz)
  • 35 kA
  • 306.25 kJ/ohms
  • ≤ 2.5 kV
  • 50 kArms
  • no tripping of a 35 A gG fuse up to 50 kArms (prosp.)
  • ≤ 100 ns
  • not required
  • 100 kA
  • 760 V / 120 min. – withstand
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 10 mm2 solid / flexible
  • 50 mm2 stranded / 35 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715 or mounting plate (using the two mounting brackets provided)
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP 20
  • 3 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • --------------------
  • 35 kA
  • 946 g
  • 4013364250062
  • 1 pc(s)
  • 961 146
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram DBM 1 CI 440 FM
      open PDF
      Dimension drawing DBM 1 CI 440 FM
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNbloc Maxi 1 CI 440 FM
Coordinated single-pole lightning current arrester, width: 3 mod. 
with integrated backup fuse and remote signalling contact 
Type 1 SPD according to EN 61643-11
RADAX Flow spark gap technology
for follow current limitation
Max. continuous operating voltage:  440 V a.c. 
Voltage protection level: 		<= 4 kV
Lightning impulse current (10/350): 	35 kA
Follow current extinguishing capability: up to 50 kArms
Energy-coordinated according to IEC/EN 62305-4 
with type 2 arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DBM 1 CI 440 FM
      Part No.: 961 146

      or equivalent.
      Installation Instructions
      Certificates
      CE_DBM_1_CI_440_FM
      CAD-Data for registered Users
      961146.stp
      961146.igs
      961146.jt
      961146.dwg
      961146m_E.dxf

DEHNbloc Maxi 1 CI 760 FM

Basic circuit diagram DBM 1 CI 760 FM
Dimension drawing DBM 1 CI 760 FM

Coordinated single-pole lightning current arrester with integrated backup fuse for 690 V TN / IT systems; with remote signalling contact for monitoring device (floating changeover contact).

Specifications

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-11
Nominal voltage (a.c.) (UN)
Maximum continuous operating voltage (a.c.) (UC)
Lightning impulse current (10/350 µs) (Iimp)
Specific energy (W/R)
Voltage protection level (UP)
Follow current extinguishing capability (a.c.) (Ifi)
Follow current limitation / Selectivity
Response time (tA)
Max. mains-side overcurrent protection
Rated breaking capacity of the internal backup protection
Temporary overvoltage (TOV) (UT) – Characteristic
Operating temperature range (TU)
Operating state / fault indication
Number of ports
Cross-sectional area (L, N/PE(N)) (min.)
Cross-sectional area (L, N/PE(N)) (max.)
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity
Type of remote signalling contact
Switching capacity (a.c.)
Switching capacity (d.c.)
Cross-sectional area for remote signalling terminals
Supplementary data:
– Nominal discharge current (8/20 µs) (In)
Weight
GTIN
PU
Part No.
  • DBM 1 CI 760 FM
  • 961 176
  • type 1 / class I
  • 690 V (50 / 60 Hz)
  • 760 V (50 / 60 Hz)
  • 35 kA
  • 306.25 kJ/ohms
  • ≤ 4 kV
  • 25 kArms
  • no tripping of a 32 A gG fuse up to 25 kArms (prosp.)
  • ≤ 100 ns
  • not required
  • 100 kA
  • 1320 V / 120 min. – withstand
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 10 mm2 solid / flexible
  • 50 mm2 stranded / 35 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715 or mounting plate (using the two mounting brackets provided)
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP 20
  • 3 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • --------------------
  • 35 kA
  • 908 g
  • 4013364250123
  • 1 pc(s)
  • 961 176
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram DBM 1 CI 760 FM
      open PDF
      Dimension drawing DBM 1 CI 760 FM
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      Coordinated single-pole lightning current arrester, width: 3 modules
with integrated arrester backup fuse and
remote signalling contact 
Type 1 SPD according to EN 61643-11
RADAX Flow spark gap technology
for follow current limitation
Max. continuous operating voltage: 760 V a.c.
Voltage protection level: 		<= 4 kV
Lightning impulse current (10/350): 	35 kA
Follow current extinguishing capability: 	25 kArms
Energy-coordinated according to IEC/EN 62305-4 
with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DBM 1 CI 760 FM
      Part No.: 961 176

      or equivalent.
      Installation Instructions
      Certificates
      CE_DBM_1_CI_760_FM
      CAD-Data for registered Users
      961146.stp
      961146.igs
      961146.jt
      961146.dwg
      961146m_E.dxf

Accessories

Earthing Clip for three-module Enclosures, single-phase, three-pole

Earthing clip for connecting the earth terminal of e.g. three SPDs with three-module enclosure to earth, with terminal.

Show SpecificationsHide Specifications

Specifications

Type
Part No.
Dimensions
Terminal
Weight
GTIN
PU
  • EB 1 3 10
  • 900 461
  • 34 x 158 x 28 mm
  • up to 25 mm2
  • 64 g
  • 4013364260559
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      Further Information
      Product Specifications (Text)

      Back

      Earthing clip with three-module enclosure, single-phase, three-pole
Earthing clip for connecting the earth terminal of e.g. three
SPDs with three-module enclosure to earth; with multifunctional terminal
Single-phase, three-pole
Terminal up to 25 mm2
Dimensions: (31 x 153 x 28) mm

      delivery and installation.

      Brand: DEHN
      Type: EB 1 3 10
      Part No.: 900 461

      or equivalent.

Earthing Clip for three-module Enclosures, single-phase, four-pole

Earthing clip for connecting the earth terminal of e.g. four SPDs with three-module enclosure to earth, with terminal.

Show SpecificationsHide Specifications

Specifications

Type
Part No.
Dimensions
Terminal
Weight
GTIN
PU
  • EB 1 4 13
  • 900 462
  • 34 x 212 x 28 mm
  • up to 25 mm2
  • 81 g
  • 4013364260566
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      Further Information
      Product Specifications (Text)

      Back

      Earthing clip with three-module enclosure, single-phase, four-pole
Earthing clip for connecting the earth terminal of e.g. four
SPDs with 3-module enclosure and terminal to earth
Single-phase, four-pole
Terminal up to 25 mm2
Dimensions: (31 x 205 x 28) mm

      delivery and installation.

      Brand: DEHN
      Type: EB 1 4 13
      Part No.: 900 462

      or equivalent.